1b0909d51a
Track session objects in the framework, and pass handles between the framework (OCF), consumers, and drivers. Avoid redundancy and complexity in individual drivers by allocating session memory in the framework and providing it to drivers in ::newsession(). Session handles are no longer integers with information encoded in various high bits. Use of the CRYPTO_SESID2FOO() macros should be replaced with the appropriate crypto_ses2foo() function on the opaque session handle. Convert OCF drivers (in particular, cryptosoft, as well as myriad others) to the opaque handle interface. Discard existing session tracking as much as possible (quick pass). There may be additional code ripe for deletion. Convert OCF consumers (ipsec, geom_eli, krb5, cryptodev) to handle-style interface. The conversion is largely mechnical. The change is documented in crypto.9. Inspired by https://lists.freebsd.org/pipermail/freebsd-arch/2018-January/018835.html . No objection from: ae (ipsec portion) Reported by: jhb
118 lines
4.5 KiB
C
118 lines
4.5 KiB
C
/*-
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* Copyright (c) 2010 Konstantin Belousov <kib@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _AESNI_H_
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#define _AESNI_H_
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <sys/queue.h>
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#include <opencrypto/cryptodev.h>
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#if defined(__amd64__) || defined(__i386__)
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#include <machine/cpufunc.h>
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#include <machine/cputypes.h>
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#include <machine/md_var.h>
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#include <machine/specialreg.h>
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#endif
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#if defined(__i386__)
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#include <machine/npx.h>
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#elif defined(__amd64__)
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#include <machine/fpu.h>
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#endif
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#define AES128_ROUNDS 10
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#define AES192_ROUNDS 12
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#define AES256_ROUNDS 14
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#define AES_SCHED_LEN ((AES256_ROUNDS + 1) * AES_BLOCK_LEN)
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struct aesni_session {
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uint8_t enc_schedule[AES_SCHED_LEN] __aligned(16);
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uint8_t dec_schedule[AES_SCHED_LEN] __aligned(16);
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uint8_t xts_schedule[AES_SCHED_LEN] __aligned(16);
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/* Same as the SHA256 Blocksize. */
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uint8_t hmac_key[SHA1_BLOCK_LEN] __aligned(16);
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int algo;
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int rounds;
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/* uint8_t *ses_ictx; */
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/* uint8_t *ses_octx; */
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/* int ses_mlen; */
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int used;
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int auth_algo;
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int mlen;
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};
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/*
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* Internal functions, implemented in assembler.
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*/
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void aesni_set_enckey(const uint8_t *userkey,
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uint8_t *encrypt_schedule /*__aligned(16)*/, int number_of_rounds);
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void aesni_set_deckey(const uint8_t *encrypt_schedule /*__aligned(16)*/,
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uint8_t *decrypt_schedule /*__aligned(16)*/, int number_of_rounds);
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/*
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* Slightly more public interfaces.
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*/
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void aesni_encrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, const uint8_t *from, uint8_t *to,
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const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
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void aesni_decrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, uint8_t *buf, const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
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void aesni_encrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, const uint8_t *from, uint8_t *to);
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void aesni_decrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, const uint8_t *from, uint8_t *to);
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void aesni_encrypt_icm(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, const uint8_t *from, uint8_t *to,
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const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
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void aesni_encrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
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const void *tweak_schedule /*__aligned(16)*/, size_t len,
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const uint8_t *from, uint8_t *to,
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const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
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void aesni_decrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
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const void *tweak_schedule /*__aligned(16)*/, size_t len,
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const uint8_t *from, uint8_t *to,
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const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
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/* GCM & GHASH functions */
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void AES_GCM_encrypt(const unsigned char *in, unsigned char *out,
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const unsigned char *addt, const unsigned char *ivec,
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unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
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const unsigned char *key, int nr);
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int AES_GCM_decrypt(const unsigned char *in, unsigned char *out,
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const unsigned char *addt, const unsigned char *ivec,
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const unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
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const unsigned char *key, int nr);
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int aesni_cipher_setup_common(struct aesni_session *ses, const uint8_t *key,
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int keylen);
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#endif /* _AESNI_H_ */
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